What strategies have been adopted for reducing or eliminating the use of freons?
What will be an ideal response?
The Montreal Protocol and its amendments have limited the production of freons. Instead, halofluorocarbons (HFCs) and halochlorofluorocarbons (HCFCs) have been adopted. Neither type of molecule transports significant amounts of Cl to the stratosphere, as HCFCs are eliminated in the troposphere by OH radicals, and HFCs do not have Cl in the molecule.
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A fictional vision of a more environmentally healthy planet in the future uses which of the following fuels and renewable energy resources?
a. underground heat only b. algae only c. sun and wind only d. flowing water only e. underground heat, algae, sun and wind and flowing water
The Indian states of Tamil Nadu and Kerala are found in the north of the country
Indicate whether the statement is true or false
How have policies such as agrarian reform and frontier colonization impacted the patterns of settlement and primary resource extraction in the region?
What will be an ideal response?
The reaction of which combination of reactants result in the formation of a hemiacetal?
A) ketone and alcohol B) ketone and aldehyde C) ketone and carboxylic acid D) none of these